1431344660 has 24 divisors (see below), whose sum is σ = 3026003400. Its totient is φ = 568694144.

The previous prime is 1431344657. The next prime is 1431344669. The reversal of 1431344660 is 664431341.

It can be written as a sum of positive squares in 4 ways, for example, as 22543504 + 1408801156 = 4748^2 + 37534^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1431344669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237179 + ... + 243138.

It is an arithmetic number, because the mean of its divisors is an integer number (126083475).

Almost surely, 2^1431344660 is an apocalyptic number.

1431344660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1431344660 is an abundant number, since it is smaller than the sum of its proper divisors (1594658740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1431344660 is a wasteful number, since it uses less digits than its factorization.

1431344660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480475 (or 480473 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1431344660 is about 37833.1159171433. The cubic root of 1431344660 is about 1126.9761901044.

The spelling of 1431344660 in words is "one billion, four hundred thirty-one million, three hundred forty-four thousand, six hundred sixty".